SITE INFORMATION AND CORRESPONDENCE FILE 2

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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3708,2705 COUNTRY CLUB BOULEVARD,STOCKTON,CA Other Reference Depth to Groundwater Ethyl- Total TPH as Oxygenates and Dissolved Monitoring Elevation Groundwater Elevation Benzene Toluene benzene Xylenes gasoline MTBE Additives Lead Well Date (feet) (feet) (feet) (µg/L) (µg/L) (µg/L) W/O (µg L) (WL) (µg/L) (µms) MW3 08/23/91 0.52 15.15 -14.63 NS NS NS NS NS NS NS NS MW3 08/29/91 0.52 15.26 -14.74 240 3.4 <2.5 3.5 630 NA NA NA MW3 12/13/91 0.52 15.40 -14.88 . 270 8 <0.5 <0.5 560 NA NA NA MW3 02/11/92 0.50 14.47 -13.97 NS NS NS NS NS NS NS NS MW3 03/18/92 0.50 12.37 -11.87 79 0.5 0.7 <0.5 170 NA NA NA MW3 06/04/92 0.50 13.19 -12.69 25 <0.5 <0.5 <0.5 87 NA NA NA MW3 09/28/92 0.50 15.82 -15.32 300 5.9 5.1 7.3 680 NA NA NA MW3 12/18/92 0.50 15.67 -15.17 1,700 150 91 140 4,000 NA NA NA MW3 04/05/93 0.50 9.40 -8.90 360 54 30 75 1,100 NA NA NA MW3 09/23/93 0.50 12.76 -12.26 1.0 0.9 <0.5 1.9 <50 NA NA NA MW3 11/15/93 0.50 13.52 -13.02 36 <0.5 <0.5 <0.5 210 NA NA NA MW3 02/10/94 0.50 12.39 -11.89 950 19 84 16 1,900 NA NA NA MW3 05/31/94 0.50 11.58 -11.08 490 2.4 11 2.2 1,200 NA NA NA MW3 08/30/94' 0.50 13.25 -12.75 4206 1.8 3.8 <0.5 1,000 NA NA NA MW3 11/22/94' 0.50 14.05 -13.55 48 <0.5 <0.5 <0.5 160 NA NA NA MW3 01/12/95' 0.50 12.83 -12.33 81 0.5 1.4 <0.5 270 NA NA NA MW3 03/31/95 0.50 NM NC 490 <5.0 67 <5.0 1,300 NA NA NA MW3 04/05/95 0.50 8.56 -8.06 610 <5.0 83 <5.0 1,700 NA NA NA MW3 07/14/95 0.50 NM NC 15 <0.5 <0.5 <0.5 <50 NA NA NA MW3 07/17/95 0.50 10.31 -9.81 NS NS NS NS NS NS NS NS MW3 10/05/95 0.50 12.27 -11.77 13 <0.5 <0.5 <0.5 <50 NA NA NA MW3 12/01/95 SITE DIVESTED BY EXXONMOBIL MW3 04/02/96 0.50 7.19 -6.69 24 <0.5 <0.5 <0.5 <50 NA NA NA MW3 07/31/96 0.50 9.73 -9.23 580 <10 11 <10 1,400 NA NA NA MW3 10/23/96 0.50 10.88 -10.38 20 <0.5 <0.5 <0.5 55 29 NA NA MW3 02/07/97 0.50 5.77 -5.27 8.1 <0.5 <0.5 '<0.5 <50 NA NA NA 0:\Projects\73708\Public\LegaK3708gw2,xis Page 5 of 19